Chalk-line holder.



l scribed. Arranged in t UNITED sTATns PATENT oFFiofn.

cHALK-LINE HOLDER.

No. 833,920.l

i Specification of Letters Patent.

Patented Oct. 23, 19,06.

Application ned Juiy 2 5, 1906. serai No. 327,612.

Beit known that I, ALBERT N. CRAWFORD, a citizen of the United States,residing at Allegheny, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inChalk-Line.

Holders; and I do declare the following to be a full, clear, and exactdescription vof the invention, such as will enable othersskilled in theart to which it appertains to make and use the same, reference being hadtothe accompanying drawings, and to the figures cf referencemarkedthereon, which form a part of this specification. y

My .'nvention relates to a new and useful improvement in chalk-lineholders; and it consists in the novel arrangement of parts, whereby theline may be brought in contact with a body of-Ichalk, or the supply ofchalk may be cut off and the line used for other means, thus serving adouble purpose.

In the accompanying drawings, forming a part of this specification, Ihave shown several detailed views of my invention.

Figure 1 is aA plan sectional view, partly broken away. Fig. 2 is across-sectional view of the holder. Fig. 3 is a longitudinal section ofa slide-valve in closed position. Fig. 4 isfa similar view of said valveopen. Fig. 5 is a sectional view of said valve on line 5 5 of Fig. 4.Fig. 6 shows a modified form of rocker-valve open, and Fig. 7 the samein closed position.

Throughout` the drawings the numeral 1 indicates a receptacle or casing,preferably made in circular form, or it may be constructed in anysuitable design, and'inside of this casing, preferably in the centerthereof, is arranged a drum 2, having connected therewith at someconvenient and suitable point a spiral spring 3 forthepurpose'hereinafter dee periphery of the casing is acircularcompartment 4, extending almost around the ventire casing andseparated from theV center or drum chamber by a partition-wall 5. Thiscompartment 4 is intended to hold the powdered chalk that I pro oseusing in connection with my device, an as a means for keeping this chalkpushed forward to the feeding-point I have provided a spiral-springfollower 6, whichis located at one end of the compartment 4. A

Arranged-through the casing and compartment 4 is a valve 7, throughwhich passes the 5 end of a line 8, ordinarily wound on the drum 2. Thepreferred form of feed-regulator which I intend using in my'deviceconsists of a cylindrical rocker-valve 9,-having a cutaway portion inthe side thereof exposing the line 8, which passes through the centerthereof. This valve can be operated by a crank attachment 10 or anyother suitable means.v 4 f 1 The modified form of valve shown consistsof an outer shell 11, having a suitable opening 12 therethroughpresented to the body of chalk. Operatively seated in this shell is aslide 13, through the center of which passes the line 8 and in which isan open-ing 13, adapted to register with the opening 12 through theouter shell, and thus expose the .line to the powdered chalk whendepressed. `A spring 14, bearing againsta iiange formed at the inner endof the slide 13, will automatically close the valve when pressure Iisreleased on said slide 13.

A filling-opening 15 is provided through 'the casing, controlled by asuitable slide or door arrangement, and as the follower-spring 6 willordinarily be over this opening I have provided a means for withdrawingor depressing the same when it becomes necessary to refill thecompartment. This means consists of a pulling wire or string 16, passingthrough the spiral spring y6, one end thereof being connected with thepushing-block 17, secured to the forward end of said s ring, and theother end ofsaidpulling-wire eing connected with a spool or drum 18,operated by a suitable crank 19. v

In the operation of my device the compartment 4 is filled with powderedchalk through the opening 15, the follower-spring 6 bein 1pulled awayfrom said opening during the ling process. If it is desired to chalk theline 8, the rocker-valve is turned so that the cut-away portion will bepresented to the body of powdered chalk, and thus expose the line 8 tosaid chalk.l By drawing on said line the same will be chalked along thelength desired, and when a vsufficient portion of said line is thuschalked the rocker-valve is reversed and the supply of chalk shut offfrom contact with the line. Upon releasing the end of said line thespring 3, which has been depressed during the unreeling, will expand andreverse the drum 2, thus automatically winding up the line 8.

IOO

In the modified form of valve when it is de- IIO used for other purposesthan for chalking;

but it is ready for instant use as a chalk-line at the will of theoperator by the methods above described.

Having thus shown and described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

l l i l. In a device of the character described, a suitable casinghaving a spring-actuated drum located therein upon which is wound achalk-line; a chalk-compartment formed in said casing; a valve seatedthrough said casing through which passes the chalk-line 5 said l valveat will protecting said line from or eX- posing it to the body of chalk,as, and for, the i purpose set forth.

2. In a device of the character described, a i suitable casing having aspring actuated drum located therein, upon which is wound a chalk-line;a chalk-compartment formed in l said casing; a spring-follower seated atone end of said compartment adapted to bear against the body of chalk,nieans for drawing said spring clear of the filling-opening; a valveseated through the casing through which passes the line g said valve atwill protecting said line from or exposing it to the body of chalk 5 as,and for, the purpose set forth.

8. In a device of the character described, a suitable casing having aspring-actuated drum located therein, upon which is wound a chalk-line;a chalk-compartment formed in said casing; a spring-follower seated atone end of said compartment adapted to bear against the body of chalk;means for drawing said spring clear of the filling-opening; arocker-valve seated through the casing through which passes the line andhaving a cut-out portion formed therein for exposing said line to thebody of chalk 5 as and for, the purpose set forth.

In testimony whereof I ai'IiX my signature in presence of two witnesses.

ALBERT N. CRAWFORD.

Witnesses BEATRICE FITZGERALD, J, I. APPLEMAN.

